Table 1.
PubMed Search Strategy
| Search strategy | |
|---|---|
| (JAMA[journal] OR NEJM[journal] OR lancet[journal] OR BMJ[journal]) AND (ordinal[tiab]1 OR categorical[tiab] OR multinomial[tiab] OR “item-response” [tiab] OR psychometric[tiab] OR scale[tiab] OR Likert[tiab]) AND (randomized controlled trial[pt]2 OR controlled clinical trial[pt] OR trial[tiab] OR randomized[tiab] OR placebo [tiab] OR clinical trials as topic[mesh: noexp]3 OR randomly[tiab]) |
1Indicates that the search is conducted on article titles and abstracts only
2Corresponds to a publication type to indicate the article’s type of information conveyed
3Corresponds to a medical subject headings such that the explosion feature has been turned off (explosion searches the more specific terms beneath that heading)